A doctor operates on a patient with cleft lip and palate at a hospital in Lhasa, southwest China's Tibet Autonomous Region, May 4, 2014. A total of 12 patients with cleft lip and palates, who are from Nagqu prefecture, received free surgeries provided by volunteers from Operation Smile China Medical Mission Sunday. The mission will offer free treatments for children with cleft lip and palates from poor families in Nagqu in the future three years.